Corp. law buffs

I have a ? about how corporations work. When we inc. our business, we were given stock options. 50/50 I received 500 shares and my partner received 500 shares. What else do you have to do after that point??? I am being told now after 3 years of bustin my _ _ _! That I never took consideration for my stock , and that I have no ownership rights, and it can be disputed. Can anybody fill me in on this topic.